Two suspicious deaths are under investigation in McIntosh County, the Oklahoma State Bureau of Investigation announced Tuesday.

Robert Hall, 55, was found dead Monday night near Hitchita inside his pickup with trauma to his body, according to OSBI. Investigators haven't determined how his wounds were inflicted and consider the death suspicious. The state medical examiner will determine the cause and manner of death.

Hitchita is in McIntosh County about 107 miles east of Oklahoma City.

Authorities also are investigating the death of a woman whose body was found early Tuesday inside a burning home along U.S. 266 five miles west of Checotah.

The body is thought to be that of homeowner Deborah Kathryn Kelsoe, 57, and the death is being investigated as a homicide, authorities said.

McIntosh County fire officials and the state fire marshal are working together to determine whether the fire was set intentionally, according to the OSBI.

Oklahoma State Bureau of Investigation spokeswoman Jessica Brown said investigators do not consider the deaths related.